Articles | Volume 20, issue 7
Hydrol. Earth Syst. Sci., 20, 3043–3058, 2016
https://doi.org/10.5194/hess-20-3043-2016
Hydrol. Earth Syst. Sci., 20, 3043–3058, 2016
https://doi.org/10.5194/hess-20-3043-2016

Research article 29 Jul 2016

Research article | 29 Jul 2016

Application of tritium in precipitation and baseflow in Japan: a case study of groundwater transit times and storage in Hokkaido watersheds

Maksym A. Gusyev et al.

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Short summary
Tritium-estimated groundwater mean transit times (MTTs) and storage volumes provide useful information for water resources management especially during droughts. In Hokkaido, we find that (1) one tritium measurement at baseflow is already sufficient to estimate MTT for some catchments, (2) the hydrogeological settings control tritium transit times of subsurface groundwater storage at baseflow, and (3) in future, one tritium measurement will be sufficient to estimate MTT in most Japanese catchments.